Sanitary cap



E. K. MADAN AND M. P. LEVINE.

SANITARY CAP.

APPLICATION FILED DEC.20, I920.

1,398,078, Patented Nov. 22, 1921.

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UNITED STATES PATENT OFFICE.

EDWARD K. MADAN, 0F BROOKLYN, AND MYER P. LEVINE. OF MOUNT VERNON, NEW

YORK, ASSIGNORS TO THE EMELOID COMPANY, OF BROOKLYN, NEW YORK, A OO- PARTNEBSHIP CONSISTING OF EDWARD K. MADAN AND PHILIP K. MADAN, OF BROOKLYN, NEW YORK, AND MYER 1. LEVINE, OF MOUNT VERNON, NEW YORK.

SANITARY CAP.

Specification of Letters Patent.

Patented Nov. 22, 1921.

Application filed December 20, 1920. Serial No. 431,882.

To all whom it may concern:

Be it known that we, EDWARD K. MADAN and MYER P. LEVINE, citizens of the United States, and residing, respectively, at Brooklyn, in the county of Kings and State of New York, and Mount Vernon, in the county of \Vestchester and State of New York, have invented certainnew and useful Improvements in Sanitary Caps, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to sanitary caps particularly designed for use in connection with the receiver and transmitter of a telephone or apparatus employing similar devices, and also in the method of making said caps; and the object of the inventionis to provide a cap of the class described composed of celluloid or similar material and the central body portion of which is concavo-convex in cross section and provided with a backwardly directed flanged portion by means of which the cap may be sprung on and held in firm engagement with a receiver or transmitter as well as constructing said cap of such material as to give a sanitary appearance and also permit of the) washing or cleaningof said .cap when necessary; and with this and other objects in 'view the invention consists in a. sanitary cap of the class and for the purpose specified which is effective in operation and constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawing forms a part, in whch the separate parts of our improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a front view of one form of our improved sanitary cap;

Fig. 2 a section on the line 2-2 of Fig. 1;

Fig. 3 a view similar to Fig. 1 and showing a modified form of cap;

Fig. 4: a section on the line 4-4 of Fig. 3;

Fig. 5 an end view of a blank from which the cap shown in Fig. 1 is made, said blank being shown on a reduced scale;

. Fig. 6 a sectional view showing two forming dies adapted to partially fashion the cap and illustrating the third step in the method of making a cap;

ig. 7 a sectional view through two other dies illustrating the fourth step in the method of producing a complete cap; and,

Fig. 8 an edge view of a part of the cap shown in Figs. 1 and 2 and illustrating the last step in the method of making the same.

In Figs. 1 and 2 we have indicated at 10 a sanitary cap adapted particularly for use in connection with the receivers of telephone apparatus. The cap 10, in the form of construction shown, comprises a central concave-convex body portion 11 provided with a central aperture 12. At the periphery of the central concavo-convex body 11 1s a flange or rim 13 composed of a backwardly directed portion 14, an outwardly directed shoulder portion 15 and a backwardly and inwardly curved portion 16.

The curved portion 16 of the rim 13 is adapted to fit over the enlarged or beaded .portion at the end of a receiver, and in order to facilitate the attachment of the cap 10 with said receiver a plurality of slits 17 are formed in the inwardly curved portion 18 of the part 16, the inner ends of said slits communicatin with apertures 19, as clearly illustrated in igs. 2 and 8 of the drawing.

In Figs. 3 and 4 of the drawing, we have shown a sanitary cap 20 adapted for use in connection with the transmitters of telephone apparatus, said cap comprising a central concavo-convex body portion 21 having a central aperture 22 and at the periphery of the central body portion 21 is an outwardly, backwardly and inwardly curved flange or rim portion 23 which is adapted to be sprung over the outer beaded portion of the transmitter or the mouth-piece thereof.

It will be noted that with both forms of the cap shown the central concavo-convex body portion as we'll as the backwardly directed flange or rim thereon are common, and in the accompanying drawing we have shown in Figs. 5 to 8 inclusive, the method of producing the cap 10, it being understood that the cap 20 shown in Figs. 3 and 8 will be produced in the same manner, the only difference being in a slight variation of the form and construction of the dies employed.

In the method of forming the cap 10, as

shown in Fig. 6 of the drawing in which the I central body portion 11 and fiangeportion 13 are produced, but the part 16 of the flange 13, or the inner edge 27 thereof, is not curved inwardly as shown in Fig. 2 of the drawing.

The next step in the production of the complete cap shown in Figs. 1 and 2 consists in placing the cap as formed by the dies 25 and 26 shown in Fig. 6 of the drawing in a die 28 and moving an electrically heated die 29 toward the die 28, or the workpiece or cap 10 therein as indicated in Fig. 7 of the drawing, and in this operation the hot die 29 cooperates with the inner edge portion 27 of the part 16 and turns said edge portion inwardly to produce the result shown in Fig. 7 and as illustrated in Fig. 2 of the drawing. In the same operation of turning the-inner edge 27 of the part 16 inwardly, the central concave-convex portion 11 of the cap 10 is pierced to form the aperture 12, as clearly shown in Fig. 7.

After the cap 10 has been formed as shown in Fig. 7 the part 16 of the flange or rim portion 13 is placed in a suitable die or punch, not shown, to form the slits 17 and apertures 19 therein, as clearly shown in Fig. 8 of the drawing.

From the foregoing it will be understood that the steps of forming the complete cap shown in Figs. 1 and 2 of the drawing consists in first providing a suitable blank, heating the blank, then fashioning the blank to approximately the desired'form of the cap with the next step in producing the complete article.

It will be apparent that while we have shown two specific forms of sanitarycaps we are notflnecessarily limited to the forms of caps herein shown and described, and changes therein and modifications thereof may be made, within the scope of the appended claim, without departing from the spirit of our invention or sacrificing its advantages.

Having fully described our invention, what EDWARD K. MADAN. MYER P. LEVINE.

Witnesses:

C. EQMULREANY, H. E. THoMPsoN. 

